[druntime-test]: exceptions: Skip spurious memoryerror

These tests seem to fail with a shared druntime (depending on arch as
well), and work with a static one. CI fails with a static druntime
though.

A gdb backtrace with a shared druntime:
```
Reading symbols from ./a...
(No debugging symbols found in ./a)
(gdb) r
Starting program: /root/build/a
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib64/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x0000005555550afc in D main ()
(gdb) c
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x0000007ff77432f0 in ?? () from /usr/lib/gcc/aarch64-unknown-linux-gnu/15/libgcc_s.so.1
(gdb) bt
\#0  0x0000007ff77432f0 in ?? () from /usr/lib/gcc/aarch64-unknown-linux-gnu/15/libgcc_s.so.1
\#1  0x0000007ff77563b8 in ?? () from /usr/lib/gcc/aarch64-unknown-linux-gnu/15/libgcc_s.so.1
\#2  0x0000007ff7757000 in _Unwind_Backtrace () from /usr/lib/gcc/aarch64-unknown-linux-gnu/15/libgcc_s.so.1
\#3  0x0000007ff78b2c6c in backtrace () from /usr/lib64/libc.so.6
\#4  0x0000007ff7aee058 in core.lifetime.emplace!(core.runtime.DefaultTraceInfo).emplace(core.runtime.DefaultTraceInfo) ()
   from /usr/lib/ldc2/1.41/lib64/libdruntime-ldc-shared.so.111
\#5  0x0000007ff7aed1f0 in core.runtime.defaultTraceHandler(void*) () from /usr/lib/ldc2/1.41/lib64/libdruntime-ldc-shared.so.111
\#6  0x0000007ff7b09614 in _d_createTrace () from /usr/lib/ldc2/1.41/lib64/libdruntime-ldc-shared.so.111
\#7  0x0000007ff7b0a7a0 in _d_throw_exception () from /usr/lib/ldc2/1.41/lib64/libdruntime-ldc-shared.so.111
\#8  0x0000007ff7acb418 in _d_assert_msg () from /usr/lib/ldc2/1.41/lib64/libdruntime-ldc-shared.so.111
\#9  0x0000005555550d18 in etc.linux.memoryerror.registerMemoryAssertHandler!().registerMemoryAssertHandler()._d_handleSignalAssert(int, core.sys.posix.signal.siginfo_t*, void*) ()
\#10 <signal handler called>
\#11 0x0000005555550afc in D main ()
```

And with a static druntime:
```
Reading symbols from ./a...
(No debugging symbols found in ./a)
(gdb) r
Starting program: /tmp/a
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib64/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x000000555556a4bc in D main ()
(gdb) c
Continuing.
core.exception.AssertError@/usr/lib/ldc2/1.41/include/d/etc/linux/memoryerror.d(415): segmentation fault: null pointer read/write operation
----------------
??:? [0x555557fa2f]
??:? [0x555557f1ab]
??:? [0x5555581d17]
??:? [0x5555570893]
??:? [0x555556b2ab]
??:? [0x555556a6d7]
??:? [0x7ff7ffb797]
??:? [0x555556a4bb]
??:? [0x5555570567]
??:? [0x5555570413]
??:? [0x5555570277]
??:? [0x555556a5a3]
??:? [0x7ff7d02053]
??:? __libc_start_main [0x7ff7d02137]
??:? [0x555556a3af]

Program received signal SIGSEGV, Segmentation fault.
0x0000007ffffffdd0 in ?? ()
```

Signed-off-by: Andrei Horodniceanu <[email protected]>

Author: the-horo

runtime/DRuntimeIntegrationTests.cmake

@@ -89,7 +89,7 @@ foreach(name ${testnames})
                 ROOT=${outdir} DMD=${LDMD_EXE_FULL} BUILD=${build} SHARED=1
                 DRUNTIME=${druntime_path_build} DRUNTIMESO=${shared_druntime_path_build}
                 ${cc} ${cxx} CFLAGS_BASE=${cflags_base} DFLAGS_BASE=${dflags_base} ${linkdl}
-                IN_LDC=1 ${musl}
+                IN_LDC=1 ${musl} BUILD_SHARED_LIBS=${BUILD_SHARED_LIBS}
         )
         set_tests_properties(${fullname} PROPERTIES DEPENDS clean-${fullname})
     endforeach()

runtime/druntime/test/exceptions/Makefile

@@ -66,6 +66,20 @@ ifdef IN_LDC
         # The value is 0xf7fe7fb8 which is complete garbage.
         TESTS := $(filter-out memoryerror_null_call,$(TESTS))
     endif
+
+    ifeq ($(OS),linux)
+        # These maybe fail with a shared runtime.
+        #
+        # CircleCI fails on x86_64, other CI and locally work.
+        # aarch64 fails locally, shared-only is not tested in CI.
+        #
+        # The failure is caused by the backtrace call in
+        # core.runtime.DefaultTraceInfo.this
+        ifeq ($(BUILD_SHARED_LIBS),ON)
+            TESTS := $(filter-out memoryerror_%,$(TESTS))
+        endif
+        $(ROOT)/memoryerror_%: private extra_ldflags.d += -link-defaultlib-shared=false
+    endif
 endif
 
 include ../common.mak